package com.qst.rongxiaotong.service;

import com.qst.rongxiaotong.pojo.ShoppingCart;
import com.qst.rongxiaotong.pojo.ShoppingModel;

import java.util.List;

public interface ShoppingCartService {
    ShoppingCart add(ShoppingCart shoppingCart);

    int delete(Integer id);

    void update(ShoppingCart shoppingcart);

    List<ShoppingModel> selectByUsername();
}
